Many plants move their leaves/flowers so that they follow the sun across the sky. Also, climbing plants reach out “tentacles” and move around until they find something to grab on to to keep climbing. How do plants do that without muscles or a brain?
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there are many plants that grow in the wild, so there’s a lot of competition. the plants that point towards the sun will absorb more sunlight, and cast shade on other competing seeds.
over time, plants developed a complex series of chemical signals to grow more cells on one side, because plant cells are not elastic. they have a hard cell wall, so any in-grown deformation is permanent
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